Thanks to BruceK for pointing me to this one:
https://www.boatsonline.com.au/boats-for-sale/used/power-boats/boden-40-trawler-sedan/222091
Dropbox - Error - Simplify your life
My diesel mechanic friend and I flew up to Brisbane, went out on her ("Sea Biscuit"), then spent a couple of hours going over her without the broker being present.
The Perkins has about 100 hours on it since a "full recondition"; it runs beautifully
The Sea Wasp has about 92
All parts of the interior hull are visible (a first on any boat I have looked at) and so far looks fine, apart from two internal repairs
Four water-tight compartments
Excellent teak decks (you can't see this from the images)
She has been neglected for 18 months; been in the water since 2011
Heavily built everywhere; we will know her displacement when she is lifted and pressure washed for the survey tomorrow morning
The images are the least skillful I have ever seen; I am sure this is why she hasn't sold
The Lowrance Elite 7 is a sounder
There's plenty of room for what we want, and she is 40'6" in length
So I made an offer, subject to survey, and that happens tomorrow. She is the best off-shore liveaboard I have seen, so far, with immense potential. If the survey comes back OK, I will report more.